Door-operating mechanism.



-1. 'M MOHR. DOOR OPERATiNG MECHANISM.

APPLICATION HLED AUG-9. 1918.

rammed Apr.'22,1919.

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J. M. MOHR.

DOOR OPERATING MECHANISM.

APPLICATION HLED AUG. 9, 191B. 1,301,484. Patented Apr. 22, 1919.

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' '1 '0 all whom ifilnay concern:

JOSEPH a. mono, or nrmoaa, IOWA.

DOOR-OPERATING MEGBANISI.

Specification of Letters Patent.

Patented Apr. 22, 1919.

Application filed August 9, 191a. Serial Io. 240,154.

Be it known that I, Josnrn M. Mona, a citizen of the United States, residin at Eldora, in the county of Hardin and te of Iowa, haveinvent'ed new and useful Improvemente in Door-Operating Mechanism, of which the following is a specification.

This invention xplates to door opening and closing mechanism, the same being especially designed for garage-doors although not limited to doors of such structures;

The invention has for its object to provide a novel and im roved electrically operated mechanismof e kind stated, the same em bodying a motor which is operatively connected to the door, together with a controllin means to lie-hereinafter described in detaii.

in order that the invention may be better on tood, reference is. had to the'accom- 1g drawings forming a part of this we.-..fication and insaid drawings,

Figure 1 is a front elevation of a frag meat of a double door showing the application of the invention;

Fig. 2 is an elevation of the door operating mechanism viewed from the inside;

Fig. 3 is a plan view of said mechanism; Fig. 4 is 7 view of a switch-actuating mechanism Fig. 5 is an elevation of said mechanism; Fig. 6 is an elevation of a supporting frame or bracket and certain gearing carried thereby;

Fig. Z is a vertical section of the switchactuating mechanism; V

Fig. 8 1s an elevatlon of a cup lever, and

Fig. 9 is an enlarged cross section on-the line 8-8 of Fig. 7.

Referring specifically to the drawings, the invention is shown applied to 'a double door, but it will be understood that it is also readily applicable to a single" door. The two doors are indicated by the reference character 10. they being hingedly connected to the doorway of the garage or other building strncture,as shown at 10". The means for swinging each door comprises a longitudinally movable rod or pitman 11 connected at one end to the actuating means to be presently described, and at the other "end to a crank arm 12 having a fixed connection with in upstanding pin 13' on a double acting spring hinge 14 fastened to the hinge end of the door at the top thereof. It will therefore be seen that the door is swung open or closed ratchet cylinder 31.

' when the rod 11 is operated. Each door is provided with an operating rod 11, and as this rod operates the door by a movement in the direction of its length, the'iiivention is also applicable to a sliding doors The crank arm 12 is fastened to the pin 13 by a set screw 15, or any other suitable means.

At 16 is shown an electric motor supported by a suitable bracket 17 which is mounted atany convenient place above the door-way in which doors 10 operate. On the shaft 18 of the motor is a worm wheel 19which is in mesh \with a worm*20 on a shaft 21. This shaft 21 also. has a' worm wheel which is in mesh with a worm 23 on a vertical'shaft 24. On the lower end of the shaft 24 is made fast a crank arm 25 carrying a pin 25 to which one of the operating rods 11 is connected. Where two doors are used, a second crank arm 2'? will be provided for the operating rod of the other door said am being parallelto the arm 25 and connected thereto at the crank pin end thereof, with the operating rod connected to the opposite end. The two operating rodsare' therefore simultaneously actuated, their movementheing in opposite directions. D

The circuit of the motor 16 is controlled by an ordinary snap switch 28 having a ro-,

tatable button 28 by which it is operated. The switch carried by a bracket 29, supported by the bracket 17, and above the switch the bracket 29 has an outstanding plate 29 which supports the switch-actuating mechanism. This mechanism comprises the following parts:

The plate 29 supports an upstanding;

sleeve 30 which serves as a support or bearing for a ratchet cylinder 31 having at its lower end a reduced and squared portion 31 by which it is attached to a spring clamp 32 which engages the switch button 2*, so that when the ratchetji cylinder is-given a turn, the switch. 28 is actuated.

The ratchet cylinder 31 is operated by two pawls, denoted by the reference characters and 34, respectively. The pawl 33 is slidably mounted in a housing 33" carried by a lever 35 fulcrnmed on the sleeve 30. A spring 33 is connected to the pawl for advancing the same. In line with the pawl, 33, the sleeve 30 has a slot 30 through which the pawl passes into engagement with the Above the lever arm 35,and'spaced therefor and which limit ti iiro'm by e'collar 36 encircling thesleeve 30,

1S a second ever arm 3? being shown atfiei". Here, the sleeve 30 is also siotteil, as shown at 30* to enable the pawl to engage the ratchet cylinder 31. The collar 36 is split and left with so opening 36 suiiiciently'wide to accommodate the innerend of the pawl. housing 33, the coller the collar. 38 a, collar 39 is fixed on the sleeve 30 by e cross pin 39 0f othev suitable means retaining the two hereinbefore described lever arms and the parts associated therewith.

i 011 the plate 29"- 40 between which the lever slrm 3-5 swings, e swing oi said arm; To the lever aim 35 is connected :1 spring 41 which is errangedto swing it back to one of the stops and thus return itto normal position v The ratchet cylinder .31 is also engageeble by a spring pawl 4-2 for preventing its rctstion in :1 reverse clii'ection. This pawl'is mounted in a housing 42 cerricclby the bracket plate 29.

The lever arms 35 and 37 are provided with actuating means whereby they are operated inclcpenclently, end one after the other. When the arm 35 is swung; the ratchet cylinder 33., through the pawl 33, is

given a partial rotation to close the switch,

2tft&I"Wl1lCll the arm is swung back by the spring 41 to its normal position. The arm 37 is designed to open the switch. When this arm is swung, the ratchet cylinder 31,

through the pawl 34, is given a further turn to open the switch.

The lever arm 35 is o cratecl manually by means of a pull chain 3 connected to one of its outer ends. This pull chain passes through a tubular guide 43 positioned above the doorway, and leading to any convenient point for actuation.

The level arm 37 is operated automatically to open the switch and thus interrupt iho operation of the motor after the doors 10 have opened ozclosed, this being accoinplishcd by the following means.

(in the bracket 17 iinlcrmnezi; as shown at M, a lcvei' 45 having: one of its ends connected by arod 46 to the lever-37, the conoections being made by b elland-socket joints 47. The other end of the lever 45 carries a cross piece 4-8 which is in the path of trip pins 49 and 50 carried by the crank am. -25 on opposite sides of the shaft 24-. The BVPK 45 is also engaged by a spring 531- ;s swinging it in :1 direction opgiosite carrying a housing I 34? for the bowl 34, the spring of the latter are two stop projections memes to that in which is swarm by the trip pins 49 and 50.

In. ogoemtion when the switch 28 closed by a, pull on the chain &3, the motorlfi starts, and through the worm reducing gear hereinbefore described the crank arms 25 and 2? start to swing to open the doors the connections between the some and the crank snpsl When the doors are wide open or nearly so, trip pin 49 strikes the and or tion 48 oi the lever 4.5 end swings seial lever, whereby, through its connection is with the lever 37, and the ratchet m-cchenisxii, the switch-is closed end the motor is stopgiefli. To close the clooi, pulled to close the switch and when doors are closed or nearly so the trip pm h comes into action to o crate the levee i5 most perfect movement in either oirectioii,

and eliminates jarv end jerk doe soiliflcs starting or stoppin The double action spring hingeslai enable the doors to be coccated manually or by the mechanism scribed, without danger oi breaking the tueting parts or putting themecheiiism out of ad ustment. It will he 'notsii the doors are openeii and closed without Pe /s s ing the motor. Thecioors are open af er the crankarms 25 and have made s half lution, and they close as the, crank iii-ms swing to complete the revolutio I claim:

1. In a door-operating mechanism, the combination with s movable cloor; of an electric-motor driven shaft a crank arm on said shaft and having an operative connection with the door, a switch controlling the motor cii'cuit, a ratchet member operetively connected to the switch, pewls engegcsbio the chain 23 is 10 through with the ratchet member for actilatiiig the some, levers carrying the pewls, actuating means for one of the levers, e movable actuating member f0i illl6 other lever, and tri s on the aforesaid crankei'm operating sold actuating member after the switch hes been closed.

2. In a floor-operating combination with movable door; of :m electriomotor driven shaft having on opere tivc connection with the door, a switch com trolling the motor circuit, a ratchet member operstively connected to the switch, pewls engsgeable with the ratchet member for actuating the some, levess carrying the pawis, a manually operated actuating moons for one of the levers, and; means foisometoperating alternately.

ing the other lever, said actuating means 3. In a door-operating; mechanisnn the combination with a movable door; of an electric-motor driven shaft, a crank arm on 'said shaft and having an operatlve connection with the door, a switch controlling the motor circuit, a ratchet member operatively connected to the switch, pawls engageable with the ratchet member for actuating the same, levers carrying the pawls, actuating means for one of the levers, an actuating lever operatively connected to the other lever, and trips on the aforesaid crank arm operating said actuating lever after the switch has been closed. 4

In testimony whereof I afiix my si aturcr,

JOSEPH M. M HR. 

